﻿using System;
using System.Management;
using System.Data;
using System.Net;

namespace zhixin
{
    /// <summary>
    /// C#利用WMI操作DNS服务器(可远程操作,需要相应权限)
    /// Author:yaosansi 
    /// Create Date:2005-09-07
    /// Modify Date:2006-10-25
    /// Site:http://www.yaosansi.com/
    /// E-mail:yaosansi at 126 dot com
    /// http://www.yaosansi.com/blog/article.asp?id=935
    ///  http://yaosansi.cnblogs.com/archive/2006/11/04/DNSServiceInCsharpWithWMI.html
    /// 注意:此版本为WINDOWS2003 DNS服务器专用.不适合其它版本操作系统.
    /// </summary>
    public class MYDNS
    {
        //要连接的DNS服务器
        private string sServerPath;
        //用户名
        private string username = null;
        //密码
        private string password = null;
        //服务器名称或IP地址
        private string DNSName = null;
        //表示管理操作的范围.这里是用来执行DNS的命名空间
        private ManagementScope DNS;
        //用于返回检索的ManagementObject集合
        private System.Management.ManagementObjectCollection Q;
        //
        private ManagementClass DnsClass;
        //
        private ManagementBaseObject MI;

        /// <summary>
        /// 返回的操作信息.
        /// </summary>
        private string errMessage = null;

        /// <summary>
        /// 获取错误信息.
        /// </summary>
        public string ErrMessage
        {
            get
            {
                return errMessage;
            }
        }
        /// <summary>
        /// 设置DNS服务器名称或IP地址
        /// </summary>
        public string ServerName
        {
            set
            {
                this.sServerPath = string.Format(@"\\{0}\root\MicrosoftDNS", value);
                this.DNSName = value;
            }
        }

        /// <summary>
        /// 设置连接服务器的用户名(指定服务器IP,用户和密码后将自动连接远程服务器,本机不需要指定)
        /// </summary>
        public string userName
        {
            set
            {
                this.username = value;
            }
        }

        /// <summary>
        /// 设置连接服务器的密码(指定服务器IP,用户和密码后将自动连接远程服务器,本机不需要指定)
        /// </summary>
        public string passWord
        {
            set
            {
                this.password = value;
            }
        }
        /// <summary>
        /// 构造函数
        /// </summary>
        public MYDNS()
        {
            sServerPath = @"\\localhost\root\MicrosoftDNS";
            DNSName = "localhost";
        }



        /// <summary>
        /// 建立对象.连接
        /// </summary>
        /// <param name="DnsType">DNS类型 MicrosoftDNS_Zone等</param>
        private void Create(string DnsType)
        {
            if (!string.IsNullOrEmpty(username) && !string.IsNullOrEmpty(password))
            {
                System.Management.ConnectionOptions Conn = new ConnectionOptions();
                Conn.Username = username; //用户名
                Conn.Password = password; //口令
                DNS = new ManagementScope(sServerPath, Conn);
            }
            else
            {
                DNS = new ManagementScope(sServerPath);
            }
            if (!DNS.IsConnected)
            {
                DNS.Connect();
            }
            ManagementPath Path = new ManagementPath(DnsType);
            this.DnsClass = new ManagementClass(DNS, Path, null);
        }

        /// <summary>
        /// 查询DNS并建立对象
        /// </summary>
        /// <param name="query">WQL查询语句</param>
        ///  <param name="DnsType">DNS类型 MicrosoftDNS_Zone等</param>
        /// <returns></returns>
        public ManagementObjectCollection QueryDNS(string query, string DnsType)
        {
            this.Create(DnsType);
            System.Management.ManagementObjectSearcher QS = new ManagementObjectSearcher(DNS, new ObjectQuery(query));
            QS.Scope = DNS;
            return QS.Get();
        }

        /// <summary>
        /// 仅查询DNS
        /// </summary>
        /// <param name="query">WQL查询语句</param>
        /// <returns></returns>
        public ManagementObjectCollection QueryDNS(string query)
        {
            try
            {
                if (!string.IsNullOrEmpty(username) && !string.IsNullOrEmpty(password))
                {
                    System.Management.ConnectionOptions Conn = new ConnectionOptions();
                    Conn.Username = username; //用户名
                    Conn.Password = password; //口令
                    DNS = new ManagementScope(sServerPath, Conn);
                }
                else
                {
                    DNS = new ManagementScope(sServerPath);
                }
                if (!DNS.IsConnected)
                {
                    DNS.Connect();
                }
                System.Management.ManagementObjectSearcher QS = new ManagementObjectSearcher(DNS, new ObjectQuery(query));
                QS.Scope = DNS;
                System.Web.HttpContext.Current.Response.Write(QS.Site.Name);
                return QS.Get();
            }
            catch (Exception ee)
            {
                System.Web.HttpContext.Current.Response.Write(ee.Message +"<br />"+ee.Source+"<br />"+ee.StackTrace);
                return null;
            }
        }


        /// <summary>
        /// 判断区域是否存在
        /// </summary>
        /// <param name="domain">区域名称</param>
        /// <returns></returns>
        public bool IsExistsZone(string domain)
        {

            try
            {
                Q = QueryDNS("Select * From MicrosoftDNS_ZONE where ContainerName='" + domain + "'");
                foreach (ManagementObject oManObject in Q)
                {
                    return true;
                }
                return false;
            }
            catch (Exception ee)
            {
                System.Web.HttpContext.Current.Response.Write(("<br />"+ee.Message +"<br />"+ee.Source+"<br />"+ee.StackTrace));
                errMessage = ee.Message;
                return false;
            }

        }

        /// <summary>
        /// 创建一个新的区域,仅区域名称
        /// </summary>
        /// <param name="domain">区域的名称</param>
        public bool CreateZone(string domain)
        {
            try
            {
                this.Create("MicrosoftDNS_Zone");
                //如果区域已经存在
                if (IsExistsZone(domain))
                {
                    errMessage = "域:" + domain + "已经存在.";
                    return false;
                }
                //建立新的区域
                this.MI = DnsClass.GetMethodParameters("CreateZone");
                this.MI["ZoneName"] = domain;
                this.MI["ZoneType"] = 0;

                ManagementBaseObject OutParams = this.DnsClass.InvokeMethod("CreateZone", MI, null);
                errMessage = "域:" + domain + "创建成功.";
                return true;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }

        }


        /// <summary>
        /// 创建一个区域,包括其它参数
        /// </summary>
        /// <param name="domain">要创建的区域名称</param>
        /// <param name="ZoneType">Type of zone. Valid values are the following:0 Primary zone. 1 Secondary zone.  2 Stub zone. 3 Zone forwarder. </param>
        /// <param name="DataFileName">[in, optional] Name of the data file associated with the zone</param>
        /// <param name="IpAddr">[in, optional] IP address of the mater DNS Server for the zone. </param>
        /// <param name="AdminEmailName">[in, optional] Email address of the administrator responsible for the zone</param>
        /// <returns></returns>
        public bool CreateZone(string domain, uint ZoneType, string DataFileName, string[] IpAddr, string AdminEmailName)
        {
            try
            {
                this.Create("MicrosoftDNS_Zone");
                //如果区域已经存在
                if (IsExistsZone(domain))
                {
                    errMessage = "域:" + domain + "已经存在.";
                    return false;
                }
                //建立新的区域
                MI = DnsClass.GetMethodParameters("CreateZone");
                MI["ZoneName"] = domain;
                MI["ZoneType"] = ZoneType;
                MI["DataFileName"] = DataFileName;
                MI["IpAddr"] = IpAddr;
                MI["AdminEmailName"] = AdminEmailName;
                ManagementBaseObject OutParams = this.DnsClass.InvokeMethod("CreateZone", MI, null);
                errMessage = "域:" + domain + "创建成功.";
                return true;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }

        }
        /// <summary>
        /// 修改区域
        /// </summary>
        /// <param name="domain">要修改的区域名称</param>
        /// <param name="ZoneType">Type of zone. Valid values are the following:0 Primary zone. 1 Secondary zone.  2 Stub zone. 3 Zone forwarder. </param>
        /// <param name="DataFileName">[in, optional] Name of the data file associated with the zone</param>
        /// <param name="IpAddr">[in, optional] IP address of the mater DNS Server for the zone. </param>
        /// <param name="AdminEmailName">[in, optional] Email address of the administrator responsible for the zone</param>
        /// <returns></returns>
        public bool ChangeZoneType(string domain, uint ZoneType, string DataFileName, string[] IpAddr, string AdminEmailName)
        {
            try
            {
                Q = QueryDNS("Select * From MicrosoftDNS_ZONE where ContainerName='" + domain + "'", "MicrosoftDNS_Zone");

                foreach (ManagementObject oManObject in Q)
                {
                    MI = oManObject.GetMethodParameters("ChangeZoneType");
                    MI["ZoneType"] = ZoneType;
                    MI["DataFileName"] = DataFileName;
                    MI["IpAddr"] = IpAddr;
                    MI["AdminEmailName"] = AdminEmailName;
                    oManObject.InvokeMethod("ChangeZoneType", MI, null);
                    errMessage = "域:" + domain + "修改成功.";
                    return true;
                }
                errMessage = "未找到域:" + domain;
                return false;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }
        }

        /// <summary>
        /// 删除区域
        /// </summary>
        /// <param name="domain">要册除的区域的名称</param>
        /// <returns></returns>
        public bool DelZone(string domain)
        {
            try
            {
                Q = QueryDNS("Select * From MicrosoftDNS_ZONE where ContainerName='" + domain + "'", "MicrosoftDNS_Zone");
                foreach (ManagementObject oManObject in Q)
                {
                    oManObject.Delete();
                    errMessage = "域:" + domain + "删除成功.";
                    return true;
                }
                errMessage = "未找到域:" + domain;
                return false;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }

        }

        /// <summary>
        /// 判断在某MicrosoftDNS_AType是否在指定的域中存在
        /// </summary>
        /// <param name="domain"></param>
        /// <param name="OwnerName"></param>
        /// <returns></returns>
        public bool IsExistsAType(string domain, string OwnerName)
        {
            try
            {
                Q = QueryDNS("Select * From MicrosoftDNS_AType where OwnerName='" + OwnerName + "' and ContainerName='" + domain + "'");
                foreach (ManagementObject oManObject in Q)
                {
                    return true;
                }
                return false;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }
        }

        /// <summary>
        /// 创建MicrosoftDNS_AType 
        /// </summary>
        /// <param name="ContainerName">Name of the Container for the Zone, Cache, or RootHints instance which contains this RR</param>
        /// <param name="HostName">主机名 [如果为空或NULL,主机名将与域名保持一致.]</param>
        /// <param name="TTL">Time, in seconds, that the RR can be cached by a DNS resolver</param>
        /// <param name="IPAddress">String representing the IPv4 address of the host</param>
        /// <returns></returns>
        public bool CreateAType(string ContainerName, string HostName, string IPAddress, string TTL)
        {
            try
            {
                string OwnerName = null;
                if (string.IsNullOrEmpty(HostName))
                {
                    OwnerName = ContainerName;
                }
                else
                {
                    OwnerName = HostName + "." + ContainerName;
                }
                this.Create("MicrosoftDNS_AType");
                //如果区域不存在
                if (!IsExistsZone(ContainerName))
                {
                    errMessage = string.Format("区域:{0}不存在,创建失败", ContainerName);
                    return false;
                }
                if (IsExistsAType(ContainerName, OwnerName))
                {
                    errMessage = string.Format("{0}中已存在{1},创建失败", ContainerName, OwnerName);
                    return false;
                }
                MI = DnsClass.GetMethodParameters("CreateInstanceFromPropertyData");
                MI["DnsServerName"] = "localhost";
                MI["ContainerName"] = ContainerName;
                MI["OwnerName"] = OwnerName;
                MI["IPAddress"] = IPAddress;
                if (string.IsNullOrEmpty(TTL))
                {
                    TTL = "3600";
                }
                MI["TTL"] = TTL;
                DnsClass.InvokeMethod("CreateInstanceFromPropertyData", MI, null);
                errMessage = "A记录:" + OwnerName + "创建成功.";
                return true;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }

        }


        /// <summary>
        /// 创建MicrosoftDNS_AType 
        /// </summary>
        /// <param name="DnsServerName">FQDN or IP address of the DNS Server that contains this RR</param>
        /// <param name="ContainerName">Name of the Container for the Zone, Cache, or RootHints instance which contains this RR</param>
        /// <param name="HostName">主机名 [如果为空或NULL,主机名将与域名保持一致.]</param>
        /// <param name="RecordClass">Class of the RR. Default value is 1. The following values are valid.1 IN (Internet) 2 CS (CSNET)  3 CH (CHAOS) 4 HS (Hesiod) </param>
        /// <param name="TTL">Time, in seconds, that the RR can be cached by a DNS resolver</param>
        /// <param name="IPAddress">String representing the IPv4 address of the host</param>
        /// <returns></returns>
        public bool CreateAType(string DnsServerName, string ContainerName, string HostName, uint RecordClass, uint TTL, string IPAddress)
        {
            try
            {
                string OwnerName = null;
                if (string.IsNullOrEmpty(HostName))
                {
                    OwnerName = ContainerName;
                }
                else
                {
                    OwnerName = HostName + "." + ContainerName;
                }
                this.Create("MicrosoftDNS_AType");
                //如果区域不存在
                if (!IsExistsZone(ContainerName))
                {
                    errMessage = string.Format("区域:{0}不存在,创建失败", ContainerName);
                    return false;
                }
                if (IsExistsAType(ContainerName, OwnerName))
                {
                    errMessage = string.Format("{0}中已存在{1},创建失败", ContainerName, OwnerName);
                    return false;
                }
                MI = DnsClass.GetMethodParameters("CreateInstanceFromPropertyData");
                MI["DnsServerName"] = DnsServerName;
                MI["ContainerName"] = ContainerName;
                MI["OwnerName"] = OwnerName;
                MI["RecordClass"] = RecordClass;
                MI["TTL"] = TTL;
                MI["IPAddress"] = IPAddress;
                DnsClass.InvokeMethod("CreateInstanceFromPropertyData", MI, null);
                errMessage = "A记录:" + OwnerName + "创建成功.";
                return true;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }

        }


        /// <summary>
        /// 修改MicrosoftDNS_AType 
        /// </summary>
        /// <param name="ContainerName">Name of the Container for the Zone, Cache, or RootHints instance which contains this RR</param>
        /// <param name="HostName">主机名 [如果为空或NULL,主机名将与域名保持一致.]</param>
        /// <param name="TTL">Time, in seconds, that the RR can be cached by a DNS resolver</param>
        /// <param name="IPAddress"></param>
        /// <returns></returns>
        public bool ModifyAType(string ContainerName, string HostName, string IPAddress, string TTL)
        {
            try
            {
                string OwnerName = null;
                if (string.IsNullOrEmpty(HostName))
                {
                    OwnerName = ContainerName;
                }
                else
                {
                    OwnerName = HostName + "." + ContainerName;
                }

                //如果区域不存在
                if (!IsExistsZone(ContainerName))
                {
                    errMessage = string.Format("区域:{0}不存在,修改失败", ContainerName);
                    return false;
                }
                if (!IsExistsAType(ContainerName, OwnerName))
                {
                    errMessage = string.Format("{0}中不存在{1},修改失败", ContainerName, OwnerName);
                    return false;
                }


                Q = QueryDNS("Select * From MicrosoftDNS_AType where ContainerName='" + ContainerName + "' and OwnerName='" + OwnerName + "'", "MicrosoftDNS_AType");

                foreach (ManagementObject oManObject in Q)
                {
                    //foreach (PropertyData p in oManObject.Properties)
                    //{
                    //    try
                    //    { Console.WriteLine(p.Name+"="+oManObject[p.Name]); }
                    //    catch
                    //    { }
                    //}
                    if (oManObject["IPAddress"].ToString() == IPAddress)
                    {
                        errMessage = "A记录:" + OwnerName + "修改失败,必须修改IP地址.";
                        return false;
                    }

                    MI = oManObject.GetMethodParameters("Modify");
                    MI["IPAddress"] = IPAddress;
                    MI["TTL"] = TTL;
                    oManObject.InvokeMethod("Modify", MI, null);
                    errMessage = "A记录:" + OwnerName + "修改成功.";
                    return true;
                }
                errMessage = string.Format("{0}中不存在{1},修改失败", ContainerName, OwnerName);
                return false;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }
        }





        /// <summary>
        /// 删除MicrosoftDNS_AType
        /// </summary>
        /// <param name="ContainerName">Name of the Container for the Zone, Cache, or RootHints instance which contains this RR</param>
        /// <param name="HostName">主机名 [如果为空或NULL,主机名将与域名保持一致.]</param>
        /// <returns></returns>
        public bool DelAType(string ContainerName, string HostName)
        {
            try
            {
                string OwnerName = null;
                if (string.IsNullOrEmpty(HostName))
                {
                    OwnerName = ContainerName;
                }
                else
                {
                    OwnerName = HostName + "." + ContainerName;
                }

                //如果区域不存在
                if (!IsExistsZone(ContainerName))
                {
                    errMessage = string.Format("区域:{0}不存在,删除失败", ContainerName);
                    return false;
                }
                if (!IsExistsAType(ContainerName, OwnerName))
                {
                    errMessage = string.Format("{0}中不存在{1},删除失败", ContainerName, OwnerName);
                    return false;
                }

                Q = QueryDNS("Select * From MicrosoftDNS_AType where ContainerName='" + ContainerName + "' and OwnerName='" + OwnerName + "'", "MicrosoftDNS_AType");

                foreach (ManagementObject oManObject in Q)
                {
                    oManObject.Delete();
                    errMessage = "A记录:" + OwnerName + "删除成功.";
                    return true;
                }
                errMessage = string.Format("{0}中不存在{1},删除失败", ContainerName, OwnerName);
                return false;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }
        }


        /// <summary>
        /// 列出某域名下的所有A记录.
        /// </summary>
        /// <param name="ContainerName">Name of the Container for the Zone, Cache, or RootHints instance which contains this RR</param>
        /// <returns></returns>
        public DataTable ListExistsAType(string ContainerName)
        {
            DataTable table = new DataTable("MicrosoftDNS_AType" + ContainerName);
            table.Columns.Add("HostName");
            table.Columns.Add("IPAddress");
            table.Columns.Add("TTL");
            try
            {
                Q = QueryDNS("Select * From MicrosoftDNS_AType where ContainerName='" + ContainerName + "'");

                foreach (ManagementObject oManObject in Q)
                {
                    try
                    {
                        DataRow row = table.NewRow();
                        row["HostName"] = oManObject["OwnerName"];
                        row["IPAddress"] = oManObject["IPAddress"];
                        row["TTL"] = oManObject["TTL"];
                        table.Rows.Add(row);
                    }
                    catch (Exception) { }
                }
            }
            catch (Exception e)
            {
                errMessage = e.Message;
            }
            return table;
        }



        /// <summary>
        /// 列出某域名下的所有MX记录.
        /// </summary>
        /// <param name="ContainerName">Name of the Container for the Zone, Cache, or RootHints instance which contains this RR</param>
        /// <returns></returns>
        public DataTable ListExistsMXType(string ContainerName)
        {
            DataTable table = new DataTable("MicrosoftDNS_MXType" + ContainerName);
            table.Columns.Add("邮件交换记录 (MX)");
            table.Columns.Add("目标主机");
            table.Columns.Add("优先级");
            table.Columns.Add("TTL");
            try
            {
                Q = QueryDNS("Select * From MicrosoftDNS_MXType where ContainerName='" + ContainerName + "'");

                foreach (ManagementObject oManObject in Q)
                {
                    try
                    {
                        DataRow row = table.NewRow();
                        row["目标主机"] = oManObject["MailExchange"];
                        row["邮件交换记录 (MX)"] = oManObject["OwnerName"];
                        row["优先级"] = oManObject["Preference"];
                        row["TTL"] = oManObject["TTL"];
                        table.Rows.Add(row);
                    }
                    catch { }
                }
            }
            catch (Exception e)
            {
                errMessage = e.Message;
            }
            return table;
        }


        /// <summary>
        /// 列出某域名下的所有别名.
        /// </summary>
        /// <param name="ContainerName">Name of the Container for the Zone, Cache, or RootHints instance which contains this RR</param>
        /// <returns></returns>
        public DataTable ListExistsCNAMEType(string ContainerName)
        {
            DataTable table = new DataTable("MicrosoftDNS_CNAMEType" + ContainerName);
            table.Columns.Add("别名 (CNAME)");
            table.Columns.Add("别名主机");
            table.Columns.Add("TTL");
            try
            {
                Q = QueryDNS("Select * From MicrosoftDNS_CNAMEType where ContainerName='" + ContainerName + "'");
                foreach (ManagementObject oManObject in Q)
                {
                    try
                    {
                        DataRow row = table.NewRow();
                        row["别名 (CNAME)"] = oManObject["OwnerName"];
                        row["别名主机"] = oManObject["PrimaryName"];
                        row["TTL"] = oManObject["TTL"];
                        table.Rows.Add(row);
                    }
                    catch { }
                }
            }
            catch (Exception e)
            {
                errMessage = e.Message;
            }
            return table;
        }


        /// <summary>
        /// 判断在某MicrosoftDNS_MXType是否在指定的域中存在
        /// </summary>
        /// <param name="ContainerName">主域名 主域 Name of the Container for the Zone, Cache, or RootHints instance that contains this RR.</param>
        /// <param name="OwnerName">Owner name for the RR. </param>
        /// <returns></returns>
        public bool IsExistsMXType(string ContainerName, string OwnerName)
        {
            try
            {

                Q = QueryDNS("Select * From MicrosoftDNS_MXType Where ContainerName='" + ContainerName + "' and OwnerName='" + OwnerName + "'");

                foreach (ManagementObject oManObject in Q)
                {
                    return true;
                }
                return false;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }
        }

        /// <summary>
        /// 创建MicrosoftDNS_MXType记录(邮件交换记录)
        /// </summary>
        /// <param name="HostName">主机名 [如果为空或NULL,主机名将与域名保持一致.]</param>
        /// <param name="ContainerName">主域 Name of the Container for the Zone, Cache, or RootHints instance that contains this RR.</param>
        /// <param name="MailExchange">目标主机 FQDN specifying a host willing to act as a mail exchange for the owner name</param>
        /// <param name="Preference">优先级 Preference given to this RR among others at the same owner. Lower values are preferred</param>
        /// <param name="TTL">Time, in seconds, that the RR can be cached by a DNS resolver</param>
        /// <returns></returns>
        public bool CreateMXType(string HostName, string ContainerName, string MailExchange, string Preference, string TTL)
        {
            try
            {
                string OwnerName = null;
                if (string.IsNullOrEmpty(HostName))
                {
                    OwnerName = ContainerName;
                }
                else
                {
                    OwnerName = HostName + "." + ContainerName;
                }

                this.Create("MicrosoftDNS_MXType");
                //如果区域不存在
                if (!IsExistsZone(ContainerName))
                {
                    errMessage = string.Format("区域:{0}不存在,创建失败", ContainerName);
                    return false;
                }
                if (IsExistsMXType(ContainerName, OwnerName))
                {
                    errMessage = string.Format("{0}中已存在{1},创建失败", ContainerName, OwnerName);
                    return false;
                }

                MI = DnsClass.GetMethodParameters("CreateInstanceFromPropertyData");

                MI["DnsServerName"] = "localhost";
                MI["ContainerName"] = ContainerName;
                // MI["RecordClass"] = 1;  //Default value is 1.  //1 IN (Internet)  //2 CS (CSNET)   //3 CH (CHAOS)   //4 HS (Hesiod) 
                MI["MailExchange"] = MailExchange;
                MI["OwnerName"] = OwnerName;
                MI["Preference"] = Preference;

                if (string.IsNullOrEmpty(TTL))
                {
                    TTL = "3600";
                }
                MI["TTL"] = TTL;
                DnsClass.InvokeMethod("CreateInstanceFromPropertyData", MI, null);
                errMessage = "MX记录:" + OwnerName + "创建成功.";
                return true;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }

        }

        /// <summary>
        /// 修改MicrosoftDNS_MXType记录(修改邮件交换记录)
        /// </summary>
        /// <param name="HostName">主机名 [如果为空或NULL,主机名将与域名保持一致.]</param>
        /// <param name="ContainerName">主域名 主域 Name of the Container for the Zone, Cache, or RootHints instance that contains this RR.</param>
        /// <param name="TTL">[in, optional] Time, in seconds, that the RR can be cached by a DNS resolver. </param>
        /// <param name="MailExchange">[in, optional] FQDN specifying a host willing to act as a mail exchange for the owner name. </param>
        /// <param name="Preference">邮件优先级 [in, optional] Preference given to this RR among others at the same owner. Lower values are preferred. </param>
        /// <returns></returns>
        public bool ModifyMXType(string HostName, string ContainerName, string TTL, string MailExchange, string Preference)
        {
            try
            {
                string OwnerName = null;
                if (string.IsNullOrEmpty(HostName))
                {
                    OwnerName = ContainerName;
                }
                else
                {
                    OwnerName = HostName + "." + ContainerName;
                }

                this.Create("MicrosoftDNS_MXType");
                //如果区域不存在
                if (!IsExistsZone(ContainerName))
                {
                    errMessage = string.Format("区域:{0}不存在,修改失败", ContainerName);
                    return false;
                }
                if (!IsExistsMXType(ContainerName, OwnerName))
                {
                    errMessage = string.Format("{0}中不存在{1},修改失败", ContainerName, OwnerName);
                    return false;
                }
                Q = QueryDNS("Select * From MicrosoftDNS_MXType Where ContainerName='" + ContainerName + "' and OwnerName='" + OwnerName + "'");
                foreach (ManagementObject oManObject in Q)
                {
                    MI = oManObject.GetMethodParameters("Modify");
                    if (string.IsNullOrEmpty(TTL))
                    {
                        TTL = "3600";
                    }

                    if (ClearEndDot(oManObject["MailExchange"].ToString()) == ClearEndDot(MailExchange) && oManObject["Preference"].ToString() == Preference)
                    {
                        errMessage = "MX记录:" + OwnerName + "修改失败,必须修改目标主机或邮件优先级.";
                        return false;
                    }

                    MI["TTL"] = TTL;
                    MI["MailExchange"] = MailExchange;
                    MI["Preference"] = Preference;
                    oManObject.InvokeMethod("Modify", MI, null);
                    errMessage = "MX记录:" + OwnerName + "修改成功.";
                    return true;
                }
                return false;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }
        }



        /// <summary>
        /// 删除MicrosoftDNS_MXType
        /// </summary>
        /// <param name="HostName">主机名 [如果为空或NULL,主机名将与域名保持一致.]</param>
        /// <param name="ContainerName">主域名 主域 Name of the Container for the Zone, Cache, or RootHints instance that contains this RR.</param>
        /// <returns></returns>
        public bool DelMXType(string HostName, string ContainerName)
        {
            try
            {
                string OwnerName = null;
                if (string.IsNullOrEmpty(HostName))
                {
                    OwnerName = ContainerName;
                }
                else
                {
                    OwnerName = HostName + "." + ContainerName;
                }

                this.Create("MicrosoftDNS_MXType");
                //如果区域不存在
                if (!IsExistsZone(ContainerName))
                {
                    errMessage = string.Format("区域:{0}不存在,删除失败", ContainerName);
                    return false;
                }
                if (!IsExistsMXType(ContainerName, OwnerName))
                {
                    errMessage = string.Format("{0}中不存在{1},删除失败", ContainerName, OwnerName);
                    return false;
                }
                Q = QueryDNS("Select * From MicrosoftDNS_MXType Where ContainerName='" + ContainerName + "' and OwnerName='" + OwnerName + "'");

                foreach (ManagementObject oManObject in Q)
                {
                    oManObject.Delete();
                    errMessage = "MX记录:" + OwnerName + "删除成功.";
                    return true;
                }
                return false;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                Console.WriteLine(e.ToString());
                return false;
            }
        }


        /// <summary>
        /// 判断在某MicrosoftDNS_CNAMEType是否在指定的域中存在
        /// </summary>
        /// <param name="ContainerName">主域名 主域 Name of the Container for the Zone, Cache, or RootHints instance that contains this RR.</param>
        /// <param name="OwnerName">Owner name for the RR. </param>
        /// <returns></returns>
        public bool IsExistsCNAMEType(string ContainerName, string OwnerName)
        {
            try
            {

                Q = QueryDNS("Select * From MicrosoftDNS_CNAMEType Where ContainerName='" + ContainerName + "' and OwnerName='" + OwnerName + "'");

                foreach (ManagementObject oManObject in Q)
                {
                    return true;
                }
                return false;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }
        }

        /// <summary>
        /// 创建MicrosoftDNS_CNAMEType记录(别名)
        /// </summary>
        /// <param name="HostName">主机名 [如果为空或NULL,主机名将与域名保持一致.]</param>
        /// <param name="ContainerName">主域 Name of the Container for the Zone, Cache, or RootHints instance that contains this RR.</param>
        /// <param name="PrimaryName">in] Primary name of the CNAME RR</param>
        /// <param name="TTL">Time, in seconds, that the RR can be cached by a DNS resolver</param>
        /// <returns></returns>
        public bool CreateCNAMEType(string HostName, string ContainerName, string PrimaryName, string TTL)
        {
            try
            {
                string OwnerName = null;
                if (string.IsNullOrEmpty(HostName))
                {
                    OwnerName = ContainerName;
                }
                else
                {
                    OwnerName = HostName + "." + ContainerName;
                }

                this.Create("MicrosoftDNS_CNAMEType");
                //如果区域不存在
                if (!IsExistsZone(ContainerName))
                {
                    errMessage = string.Format("区域:{0}不存在,创建失败", ContainerName);
                    return false;
                }
                if (IsExistsCNAMEType(ContainerName, OwnerName))
                {
                    errMessage = string.Format("{0}中已存在{1},创建失败", ContainerName, OwnerName);
                    return false;
                }

                MI = DnsClass.GetMethodParameters("CreateInstanceFromPropertyData");

                MI["DnsServerName"] = "localhost";
                MI["ContainerName"] = ContainerName;
                // MI["RecordClass"] = 1;  //Default value is 1.  //1 IN (Internet)  //2 CS (CSNET)   //3 CH (CHAOS)   //4 HS (Hesiod) 
                MI["PrimaryName"] = PrimaryName;
                MI["OwnerName"] = OwnerName;

                if (string.IsNullOrEmpty(TTL))
                {
                    TTL = "3600";
                }
                MI["TTL"] = TTL;
                DnsClass.InvokeMethod("CreateInstanceFromPropertyData", MI, null);
                errMessage = "CNAME:" + OwnerName + "创建成功.";
                return true;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }

        }

        /// <summary>
        /// 修改MicrosoftDNS_CNAMEType记录(别名)
        /// </summary>
        /// <param name="HostName">主机名 [如果为空或NULL,主机名将与域名保持一致.]</param>
        /// <param name="ContainerName">主域名 主域 Name of the Container for the Zone, Cache, or RootHints instance that contains this RR.</param>
        /// <param name="TTL">[in, optional] Time, in seconds, that the RR can be cached by a DNS resolver. </param>
        /// <param name="PrimaryName">in] Primary name of the CNAME RR</param>
        /// <returns></returns>
        public bool ModifyCNAMEType(string HostName, string ContainerName, string TTL, string PrimaryName)
        {
            try
            {
                string OwnerName = null;
                if (string.IsNullOrEmpty(HostName))
                {
                    OwnerName = ContainerName;
                }
                else
                {
                    OwnerName = HostName + "." + ContainerName;
                }

                this.Create("MicrosoftDNS_CNAMEType");
                //如果区域不存在
                if (!IsExistsZone(ContainerName))
                {
                    errMessage = string.Format("区域:{0}不存在,修改失败", ContainerName);
                    return false;
                }
                if (!IsExistsCNAMEType(ContainerName, OwnerName))
                {
                    errMessage = string.Format("{0}中不存在{1},修改失败", ContainerName, OwnerName);
                    return false;
                }
                Q = QueryDNS("Select * From MicrosoftDNS_CNAMEType Where ContainerName='" + ContainerName + "' and OwnerName='" + OwnerName + "'");
                foreach (ManagementObject oManObject in Q)
                {
                    if (ClearEndDot(oManObject["PrimaryName"].ToString()) == ClearEndDot(PrimaryName))
                    {
                        errMessage = "CName记录:" + OwnerName + "修改失败,必须修改别名主机.";
                        return false;
                    }


                    MI = oManObject.GetMethodParameters("Modify");
                    if (string.IsNullOrEmpty(TTL))
                    {
                        TTL = "3600";
                    }
                    MI["TTL"] = TTL;
                    MI["PrimaryName"] = PrimaryName;
                    oManObject.InvokeMethod("Modify", MI, null);
                    errMessage = "CNAME:" + OwnerName + "修改成功.";
                    return true;
                }
                return false;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }
        }



        /// <summary>
        /// 删除MicrosoftDNS_CNAMEType
        /// </summary>
        /// <param name="HostName">主机名 [如果为空或NULL,主机名将与域名保持一致.]</param>
        /// <param name="ContainerName">主域名 主域 Name of the Container for the Zone, Cache, or RootHints instance that contains this RR.</param>
        /// <returns></returns>
        public bool DelCNAMEType(string HostName, string ContainerName)
        {
            try
            {
                string OwnerName = null;
                if (string.IsNullOrEmpty(HostName))
                {
                    OwnerName = ContainerName;
                }
                else
                {
                    OwnerName = HostName + "." + ContainerName;
                }

                this.Create("MicrosoftDNS_CNAMEType");
                //如果区域不存在
                if (!IsExistsZone(ContainerName))
                {
                    errMessage = string.Format("区域:{0}不存在,删除失败", ContainerName);
                    return false;
                }
                if (!IsExistsCNAMEType(ContainerName, OwnerName))
                {
                    errMessage = string.Format("{0}中不存在{1},删除失败", ContainerName, OwnerName);
                    return false;
                }
                Q = QueryDNS("Select * From MicrosoftDNS_CNAMEType Where ContainerName='" + ContainerName + "' and OwnerName='" + OwnerName + "'");

                foreach (ManagementObject oManObject in Q)
                {
                    oManObject.Delete();
                    errMessage = "CNAME:" + OwnerName + "删除成功.";
                    return true;
                }
                return false;
            }
            catch (Exception e)
            {
                errMessage = e.Message;
                return false;
            }
        }


        /// <summary>
        /// 去除以.结尾的字符串的.
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        private string ClearEndDot(string str)
        {
            string returnStr = str;
            if (!string.IsNullOrEmpty(str))
            {
                int l = str.LastIndexOf(".");
                if (l != -1 && l == str.Length - 1)
                {
                    returnStr = str.Substring(0, str.Length - 1);
                }
            }
            return returnStr;
        }

    }
}
